Java developer, SQL

Language: English, German, Polish

Java experience: Servlet, JDBC, JDBC pooling / C3P0, Hibernate/JPA, REST API

SQL experience: PostgreSQL dialect, PL/pgSQL

Database Administration: PostgreSQL

Servers Linux: Gentoo, CentOS

Servers: Windows Server, AD, TS

Administration 1C: client / server

Network Administration: iptables, iproute, Mikrotik (RouterOS), QOS, DNS, DHCP

Administering Telephony: SIP, Asterisk, usb_dongle, Polycom

Building a VPN: OpenVPN, PPPtP, SSTP

Administering mail server: dovecot, postfix, clamav, SPF, DKIM, Spamassassin

Formation of backups with asymmetric encryption (RSA)

Server Virtualization: qemu / kvm, VirtualBox

Administration Web Server: apache, nginx, Tomcat/Jetty

Programming: php, C #/Dot Net, C/C++, Java

Administration Storage Server: iSCSI, AoE, NFS, SMB, DRBD

IDE: Eclipse, SharpDevelop

Version control: Git, SVN